Table 1 Demographic characteristics of patients (N = 240)

Gender

Male

144 (60%)

101.08 ± 13.51

2.64 ± 0.52

2.33 ± 0.40

2.03 ± 0.41

Female

96 (40%)

101.09 ± 8.62

2.69 ± 0.46

2.41 ± 0.37

2.11 ± 0.04

p > 0.05

p > 0.05

p > 0.05

p > 0.05

Single

6 (2.5%)

105.83 ± 14.27

2.77 ± 0.37

2.33 ± 0.29

2.31 ± 0.23

Marital status

Married

211 (87.9%)

108.39 ± 11.81

2.65 ± 0.50

2.35 ± 0.39

2.05 ± 0.39

Widow

18 (7.5%)

108.67 ± 10.17

2.08 ± 0.31

2.44 ± 0.53

2.00 ± 0.50

Divorced

5 (2.1%)

110.00 ± 5.29

2.21 ± 0.44

2.86 ± 0.27

2.62 ± 0.43

p > 0.05

p > 0.05

p > 0.05

p > 0.05

Illiterate

51 (21.3%)

110.88 ± 6.25

2.53 ± 0.43

2.30 ± 0.41

2.23 ± 0.34

Elementary school

74 (30.8%)

108.09 ± 10.10

2.63 ± 0.46

2.36 ± 0.39

2.05 ± 0.38

Education level

Junior High school

43 (17.9%)

106.77 ± 10.52

2.61 ± 0.55

2.30 ± 0.36

2.00 ± 0.37

Diploma

48 (20%)

110.17 ± 15.06

2.81 ± 0.53

2.40 ± 0.39

1.92 ± 0.41

licentiate

18 (7.5%)

104.50 ± 14.89

2.92 ± 0.50

2.56 ± 0.33

2.10 ± 0.45

Master of Science

6 (2.5%)

101.50 ± 21.48

2.50 ± 0.45

2.37 ± 0.36

2.12 ± 0.38

p > 0.05

p < 0.05^*

p > 0.05

p < 0.01^**

Employee

9 (3.8%)

105.67 ± 12.66

2.72 ± 0.59

2.38 ± 0.42

1.81 ± 0.26

Worker

9 (3.8%)

97.44 ± 16.70

2.36 ± 0.25

2.25 ± 0.33

2.12 ± 0.41

Job

Housewife

49 (20.4%)

108.80 ± 8.53

2.71 ± 0.44

2.48 ± 0.34

2.07 ± 0.35

Self-Employment

68 (28.3)

108.34 ± 13.12

2.64 ± 0.44

2.25 ± 0.29

1.03 ± 0.38

Retired

41 (17.1)

108.07 ± 15.77

2.83 ± 0.56

2.56 ± 0.39

2.00 ± 0.48

Unemployed

64 (26.7)

110.32 ± 7.23

2.57 ± 0.55

2.27 ± 0.45

2.15 ± 0.37

p > 0.05

p > 0.05

p < 0.05^*

p > 0.05

Resident in

Urban

213 (88.8%)

108.15 ± 12.21

2.67 ± 0.50

2.38 ± 0.38

2.06 ± 0.40

Rural

27 (11.2%)

110.70 ± 7.48

2.60 ± 0.51

2.21 ± 0.41

2.03 ± 0.32

p > 0.05

p > 0.05

p < 0.05^*

p > 0.05

 < 10 million Rials

82 (34.2%)

10.39 ± 11.66

2.59 ± 0.50

2.34 ± 0.38

2.06 ± 0.34

Income

10–20 million Rials

47 (19.6%)

110.62 ± 5.44

2.57 ± 0.29

2.24 ± 0.29

2.07 ± 0.39

20–30 million Rials

50 (20.8%)

106.54 ± 9.58

2.56 ± 0.46

2.23 ± 0.33

2.04 ± 0.42

 > 30 million Rials

61 (25.4%)

107.00 ± 16.17

2.91 ± 0.57

2.58 ± 0.42

2.06 ± 0.46

p > 0.05

p < 0.01^**

p < 0.01^**

p > 0.05

HD time

2 sessions

106 (44.2)

107.47 ± 8.43

2.57 ± 0.42

2.30 ± 0.33

2.03 ± 0.37

3 sessions

134 (55.8)

109.19 ± 13.86

2.74 ± 0.54

2.41 ± 0.42

2.09 ± 0.42

p > 0.05

p < 0.01^**

p < 0.05^*

p > 0.05

Hospital

Hospital A

196 (80)

109.24 ± 12.16

2.70 ± 0.49

2.36 ± 0.40

2.08 ± 0.39

Hospital B

98 (20)

105.34 ± 9.69

2.53 ± 0.52

2.34 ± 0.34

1.98 ± 0.39

p > 0.05

p > 0.05

p > 0.05

p > 0.05